Identify these tools please

[steveharriss]

Just had these included in a sale of scuba tools from the Wife of a retired technician. I know what most of them are for but can anyone identify these three tools please?

 

[axxel57]

The first tool looks like a tool to loosen or tighten the yoke nut of a certain regulator, the second seems to be a bushing installation tool for a certain first stage. The third one could be a tool to loose or tighten a specific second stage cap.
For which brand those are, I cannot tell you, sorry, probably some older models.

 

[steveharriss]

Thanks. I know it's a long shot but if someone has had these in their hands before it shouldn't be impossible to ID them. The brass tool with three stepped levels at one end and one at the other is particularly distinctive

 

[Fishpie]

Not 100% but I'd say they were Poseidon service tools.

 

[steveharriss]

That would make sense as I bought the job lot to get the two Poseidon combination tools. I just can't see these in the service manual.

 

[Fishpie]

Pic 1 would remove the end cap of 300 1st stage.
2, not sure, but probably for loading up the internals for the business end of same 1st stage.
3 and 4 taking apart Cyklon and/or Jetstream 2nds ?

 

[steveharriss]

Just had an alternative opinion that 1 and 2 are early Apeks Tools. Specifically a Sentinel and Mata tool. Maybe the 3rd and 4th pictures are Posiedon?